Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2009-11-25
2011-11-29
Doan, Phuoc (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S428000, C455S433000
Reexamination Certificate
active
08068830
ABSTRACT:
A second switch receives an indication from a roaming network that a call forwarded by the roaming network has been dropped by the roaming network, and in response to receiving the indication, forwards the call from a first switch.
REFERENCES:
patent: 2005/0250493 (2005-11-01), Elkarat et al.
Carlson Steven I.
Riffe Scott E.
AT&T Mobility II LLC
Doan Phuoc
Moazzam & Associates, LLC
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